Electric Circuits Answers
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Roshan describes the basic parts of an electric circuit using a shower as a model. Which part of a circuit does the water pipe represent?
A
the wireB
the switchC
the batteryD
the resistor2
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A symbol from a circuit diagram is shown.
A
a switchB
a light bulbC
a wireD
a battery3
What symbol would best represent an electric fan speed controller in an electric circuit?
A
OptionB
OptionC
OptionD
Option4
Look at the circuit diagram.
A
one battery, two light bulbs, and three resistorsB
one battery, two switches, and three light bulbsC
one switch, one resistor, and three light bulbsD
one switch, one light bulb, and three batteries5
Patty makes a table of the symbols used for the parts of an electric circuit.
A
BatteryB
SwitchC
ResistorD
Bulb6
Which statement describes an open circuit?
A
The circuit is incomplete and broken, and the lights in the circuit shine.B
The circuit is complete and unbroken, and the lights in the circuit shine.C
The circuit is incomplete and broken, and the lights in the circuit do not shine.D
The circuit is complete and unbroken, and the lights in the circuit do not shine.7
How does a parallel circuit change when a branch is added?
A
The total resistance increases, so the current in the circuit decreases.B
The total resistance decreases, so the current in the circuit increases.C
The total resistance increases, so bulbs shine at a lower brightness.D
The total resistance decreases, so bulbs shine at a higher brightness.8
Which statement describes one feature of a closed circuit?
A
Charges do not flow.B
Bulbs will not shine.C
The circuit is broken.D
The circuit is complete.9
Jamal draws the circuit diagram shown.
A
one battery, two switches, two resistorsB
two batteries, three switches, two resistorsC
one battery, four switches, one resistorD
two batteries, three switches, two resistors10
Which would cause an electric circuit to lack a current?
A
open switchB
closed switchC
lighted bulbsD
unlighted bulbsDid you find these answers helpful?
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